Control device



` 'rammed Nov. 1; `1932 vmaximiser w. nenn, or aocxronn, more con'rnon Davies Application n led Iebruary 8, 1830. Serial fo. 85,991..

` led April 19, 1928 (Patent No. 1,779,978)..

ln the control device disclosed in said ap' plication, the flow of fluid through a pipe is controlled by means of a suitable valve which is operatively connected to a pressure responsive member. Movementl of the member in opposite directions serves to open and close the valve. i

v The primary object'of the present invention resides in the provision of novel means for adjusting the extent of movement of the valve under the influence of the pressure responsi've-member.` Y A more specific obj andjmprove'd adjustable connection between the valveand the pressure responsive member which is not subject to accidental displacement, andwhich is simple and inelxipen sive in'constrution and easy to manip ate. Further objects and advantages will be'- come apparent as. the description In'the accompanying drawing, ig. 1 is an elevational'view partially in section ofv a.v device embodying Athe features of my invention. Y Y Fig. 2 is -a'fr'agmentary sectional view taken along line 2 2 'of Fig. 1. Y l While the invention is susceptible of various modifications and alternative construc- 'tions, I have shown' in thedrawin and will herein describe in detail the preerred embodiment, but itis to be understood that I do not thereb intend to limit the invention to the speci c kform disclosed, but intend to cover all modifications and alternative constructions falling within the spirit and scope of the invention as expressed 1n the appended claims.

Referring more particularly to the exemplary embediment of fthe' invention illustrated in the drawing, 3 represents a iiuid supply pipe' or line. `)interposed in the line is avalve i which may be of any suitable construction and which in the present in- 5 stance is in the form of a butterfly valve.

ect is to providey a Anew The latter is mounted on a suitable shaft 5, one end of which extends diametrically out of a fitting 6 interposed in the pipe 3. e

The outer end of the shaft 5 is operatively connected to a suitable pressure responsive member such as a diaphragm 7. In the present instance, this connection comprises a gear segment 8 secured on the shaft 5, a gear rack 9 meshin with the segment, and a plunger 10 on which the gear rack is mounted, and 0 which is tightly secured to thek central portion of the diaphragm 7. Y f The diaphragm which may be of any j suitable material is secured between two opposed sections 11 and 12 of a suitable casing u 13, and serves to define therewith chambers 14 and 15 respectively. The casing13 may be mounted Ven any suitable su port, and-in the resent instance is -sec tothe fitting 6 1g means of a suitable connecting member 79 The chamber 14 communicates with the atmosphere through suitable vent means,

- such as the openingl'l formed Yin the section 11,*` and the chamber 15 ia 75 through 'a small by-pass or bleed line .18 to. the fluid' pipe 3 preferablyA at the high presside ofthe valve 4:.- In the'present inf stance, the chamber 15 is formed with pocket or auxiliary'chnmber Y19 interposed 9.

f 1n thev pipe 18.

f Mounted in the chamber 19 and interposed A in the line 18 is a suction creating means` which preferablycomprises an injector nozzle 20 and an expanding nozzle 21 in align# s A ment. The free end of the line 18 be ond the chamber 19 is provided with a suita le valve 22 for selectively opening the line to the atmosphere and for sealing the line.

The plunger 10 extends slidably through 9 the casin 13, the end remote from the rack 9 being isposed in a closed tube 23 tightly Y 'secured on the outside of the section 12. Theother end ci the plunger Y10 extends through an upstanding lug or ear 24 .una bracket 25 conveniently mounted on the .casing section 11. Adjustably threaded on the plunger 10 in spaced relation to and at opposite sides of the lug 24 to' define the range and extent 10 of reciprocationcf the plunger, and hence the range and degree ot movement of the valve 4 1n opening and closing, are two suitable stop nuts 27 and 28.

One of the important features of the present invention resides in the provision of means tor securing these nuts securely in position of adjustment so as to maintain the desired gas How. To this end, each of the notches 29 to hold the nuts 27 and 28 in position of adjustment.

In' operation., when the valve 22 is closed, pressure will build 11p in the chamber l5, whereupon the diaphragm 7 will liex to the left to move the main valve 4 into closed or minimum now position. Conversely, when the valve 22 is opened, the liow of fluid from the nozzle 20 into the nozzle 2l will create a suction in the chamber l5, whereupon the diaphragm 7 will dex into the position shown in Fig. l to open the valve d. The extent of movement of the valve in opening or closing is determined by the relative spacing of the nuts 27 and 28. rllhe range of movement oi the valve 4 is determined by the position ot the nuts 27 and 28 relative to the lug 24. To maintain the desired flow of gas through the line 3, it is essential that the nuts 27 and 28 be held securely in position of adjustment. rllhis is accomplished by means oi the pin 32 and the coacting notches 29. lin general, the locking means for the nuts`27 and 28 is easy to' manipulate, certain in action, and simple in construction.

l claim as my invention:

l. In combination, a support, a plurality of parallel aligned lugs on said support, a plunger reciprocable through one of said lugs, means for actuating said plunger, means operatively connected to said plunger for actuation thereby, a pair of stop nuts threaded on said plunger at opposite sides of said last mentioned lug, each of said nuts being formed with a plurality ofl notches in its periphery, and a spline pin extending removably through said lugs along said plunger, and

selectively engaging in said notches.

2. In combinatiom-a support, a fixedy stop `on said support, a plunger reciprocable in said stop, means for actuating said plunger, a valve operatively connected to said plunger, a pair of. stop nuts adjustably threaded on "said plunger at opposite sides of said stop,

each of said nuts having a longitudinal notch in its periphery, and a spline pin removably mounted on said support and when in position engaging said notches to lock said nuts against adjustment on said plunger.l

3. In combination, a support, a fixed stop on said support, a member slidable relatively to said stop, a stop nut adjustably threaded on said member, said nut being movable axially into and out of abutting engagement with said stop upon movement of said member respectively in opposite directions to limit the movement of said member in one direction and being formed with a notch in its periphery extending longitudinally .of its axis, and a locking pin removably mounted on said support and engaging in said notch. said pin extending in the direction of movement of said member and serving to hold said nut against rotation in all positions of axial adjustment.

4. Incombination, a support, a lixed stop on said support, a member extending slidably through said stop, a movable stop yadjustably threaded on said member, said movable stop being movable into-and` out of abutting engagement with said fixed stop upon movement of said member 'n opposite directions to limit the range and extent of movement of said member in one direction and being formed with a recess extending in the direction of movement of said member, and a locking pin removabl mounted Aon said support, and when in pdsition having a spline engagement with said recess to hold said movm ably stop against rotation in all positions of movement with said member.

5. In combination, a support, a iixedstop on said support, a member slidable relative to said stop, a movable stop adjustably threaded on said member, said movable stop' being movable into and out of abutting engagement with said xed stop upon movement of said member in opposite directions to limit the range and extent ont movement of said member in one direction and being formed with a recess extending in the direction of movement of said member, and a locking member removably mounted on said supfluid therethrough, a casing mounted on said pipe, a pressure responsive member disposed 1n said casing, a plunger secured to said member and slidably mounted in said casing, one end of said plunger extending beyond said casing and carrying agear rack, a gear segment on said valve in mesh with said gear rack, a bracket mounted on said 'casing and extending along said plun er, said bracket being formed with a lateral projecting lu said plunger extending s idably throng said lug, a pair of nuts threaded on said plunger` at opposite sides of said lug, said nuts being formed with a plurality o peripheral notches, a plurality of additional lugs formed on said bracket, and a locking pin removably inserted in said lugs and when in position adapted to selectively engage in said notches to hold said nuts in position of adjustment on said plunger.

7. A control device comprising, in combination with a Huid supply pipe, a pivotal valve in said pipe for controlling the flow of fluid therethrough, a plunger having a gear connection with said valve, av bracket formed with a plurality of laterally projecting lugs, said plunger extendingslidably through one of said lugs, a pair of nuts threaded on said plunger at opposite sides of said last mentioned lug, said nuts being formed with a plurality of peripheral notches, and a locking pin removably inserted in said lugs and when in position adapted to selectively engage in said notches to hold said nuts in posi-tion of adjustment on said plunger.

8. In combination, a support, a plurality of parallel alined lugs on said support, a plunger reciprocable through one of said lugs, ay pair of stop nuts threaded on said plunger at opposite sides of said last mentioned lug, each of said nuts being formed with a plurality of notches in its periphery, and a spline pin extending removably through said lugs along said plunger, and.

selectively engaging in said notches.

9. In combination, a support, a fixed stop l on said support, a plunger reciprocable in said stop, a pair of stop nuts adjustably threaded on said plunger at opposite sides of said stop, each of said nuts having a longitudinal notch in its periphery, and a spline pin removably mounted on said support and when in position engaging said notches to lock said nuts against vadjustment on said plunger.

10. In combination, a support, a stop on said support, a member reciprocable relatively to said stop, a pair of stop nuts adjustably threaded on said member at opposite sides of said .stop for movement therewith selectively into engagement with said stop,

- each of said nuts having a recess, and a spline pin removably mounted on said support and extending Ain the direction of reciprocation of said member and when in position engaging slidably in said recesses to lock said nuts against rotation on said member.

11. In combination, an elongated support, a lug on said support', said lug constituting a stop, a non-rotatable plunger reciprocable longitudinally of said support past said stop, a pair of vstop nuts threaded on said plunger res ectively at opposite sides of said stop, each oi) said nuts being formed with a plurality ot notches in its periphery, and a spline pin removably mounted on said support, and when in position adapted to engage selectively in said notches to hold said nuts against rotationon said plunger in various positions of reciprocation of said plunger.

12. In combination, a fixed support, a stop on said support, a movable support movable in opposite directions relative'to said stop, a stop on said movable support and ada ted for engagement with said first mentione stop to limit the movement of said movable support in one direction, one of said stops being adj ustably threaded' on its support and having a recess extending in the direction of relative movement of said supports, and a locking means removably mounted on the support for the other member, said locking means when said recess to lock said a justable stop against adjustlnent in the relative movement between said supports.

13. In combination, a support, a stop on said support, an elongated'non-rotatable rod `mounted for reciprocation relative to said one of said notches, said pin exten ing in' the direction of reciprocation of said rod and serving to hold said nut `.against rotation during said reci rocation.

14. In com ination, a support, a lixed stop on said support, a plunger reciprocable in said stop, means for` reciprocating said plunger, a gear rack longitudinall secured on sald plunger, a rotary gear mem er mesh- -in position having a spline en agement with f Y. On

ing with said rack, a valve operatively cone nected to .said gear member, a air of stop nuts adjustably threaded on sai plunger at opposite sides of said stop, each o sai nuts having 'a longitudinal notch in its periphery,

and a spline pin removably mounted on said support and when in position engaging said notches 'to lock said nuts against adjustment on said plunger.

In testimony whereof, I have hereunto affixed my signature.

GARNET W. MCKEE. 

